A Study of Efficacy and Safety of Pembrolizumab Plus Enfortumab Vedotin +/- Investigational Agents in First-Line Metastatic Urothelial Carcinoma
This study is a substudy being conducted under one pembrolizumab umbrella master study KEYMAKER-U04. The substudy will consist of 2 parts. Part 1 will evaluate the efficacy and safety of coformulated